Gate valve



P. Y. DUFFEE GATE VALVE March 18, 1952 6 Sheets-Sheet l INVENTOR. lau/ X@af/F@ BY Filed June P. Y. DUFFEE GATE VALVE March 18, 1952 6Sheets-Sheet 2 Filed June 50, 1947 K Q A n N n ma m@ Vl. M 0, S w l. w Qm, 1 1Q f., NK m Nw@ S w Q\ M. MY m Q A TTORNE V5 P. Y. DUFFEE March 18,1952 GATE VALVE 6 Sheets-Shea?l 3 Filed June 50, 1947 l INVENTOR. aa/ X'0a/7F@ BY WMe/Vy,

ATTNEYS March 18, 1952 P. Y. Dux-'FEE GATE VALVE Filed June so, 1947 6Sheets-Sheecl `4 March 18, 1952 P. Y. DUFFEE GATE VALVE 6 Sheets-Sheet 5Filed June 30, 1947 JNVENTOR. 'Paa/ ).f a//fe BY @owoabyg A TTONEYSMarch 18, 1952 P Y, DUFFEE 2,589,784

GATE VALVE Filed June 50, 1947 6 Sheets-Sheet 6 g) F I r2. ll

/05 [06 ,08 9598 J0? /09 99 97 96 "L /00 f 9/ J l I .9 I s/ 4 /0/ IN VEN TOR.

Paa/ )f a/ff'@ BY a ava y I ATTGRNEY Patented Mar. 18, i952 UNITEDySTATES PATENT OFFICE GATE VALVE Paul Y. Duffee, Houston, Tex.

Application June 30, 1947, Serial No. 758,096

Claims.

This invention relates to gate valves designed particularly for use inconduits for carrying oil or other fluids of a liquid or gaseous natureunder high pressures and has particular reference to valves of thischaracter which are 0f the full conduit lubricated wedge type.

The primary object of the invention is the provision of a novelconstruction of Valve of this character which permits an easy and rrapidmanipulation of the movable valve member to provide a full opening ofthe conduit and also a partial opening thereof to any desired extent,and which also permits a tight sealed closing of the valve.

Another object of the invention is the provision of simple and efficientmeans for effecting a close fitting of the coacting valve members toinsure against leakage when in fully closed or open relation, and whichmeans is also operable to effect an easy opening or breaking of theclosing seal. to seal the valve at any position of opening movement,which is important.

Another object of the invention is the provision in a valve of thischaracter of separate independently operable means for imparting openingand closing movements to the valve and for locking or sealing it in anyadjusted position, thus enhancing the practicability and com- 'mercialvalue of the valve.

Another object of the invention is the provision of a valve of thecharacter described that is of such construction and arrangement ofparts as to allow for a single pressure body for the operating parts andalso a single ixture set-up of such body for machining purposes toinsure a true relationship between the valve seats and the control shaftreceiving parts.

Another object of the invention is the provision of a valve body casingadapted for mounting the valve members and control means therein andwhich is also adapted to be opened for inspection as to the operation ofthe internal parts andas to valve seat tightness in either open orclosed position.

Another object of the invention is the provisionof a universaladjustment for at least one of the valve seating members to permitperfect seating of the valve and seat members to compensate for anyerrors in machining.

Other objects and advantages of the invention will be apparent from thefollowing detailed description, and from the accompanying drawings,illustrating one embodiment of the invention, in which'- Furthermore,such means is operable Fig. 1 is a central vertical longitudinal sectionof the valve taken on the line l-I in Fig. 3, with the movable valvemember in closed position; Fig. 2 is a horizontal section on the line2-2 in Fig. l, with parts in full; Figs. 3 and 4 arecrosssections on thelines 3-3 and 4 4, respectively, in Fig. l; Fig. 5 is a fragmentarysectional detail of the valve operating means taken on the line 5--5 inFig. l; Fig. 6 is a central longitudinal section of a different andpreferred form'of the valve, with the movable valve member seated inline closing position, with parts in full; Fig. '7 is a section thereofon the line 'l--1 in Fig. 6; Fig. 8 is a section on the line 8-8 in Fig.6, with parts in full and with the closure member for the inspectionopening removed; Fig. 9 is an outer end View of the shaft extensionbearing sleeve; Fig. 10 is a cross-section on the line IU-IU in Fig. 6;Fig, 1l is an enlarged section similar to Fig. 6 of the control portionof the device, and Fig. l2 is perspective View of the lock collar.

Referring to the drawings, l designates a valve casing forming a chamber2 therein which is elongated transversely of a conduit or fluid carryingline to which attached and is provided substantially centrally of itsends with directly opposed side openings 3 either of which may serve asthe inlet or as the outlet openingof the valve, depending on theposition of the valve in the fluid line. The portion of the casingforming each of these openings is outwardly extended to form a nipple 4to which a pipe or a pipe attaching flange may be ysecured by welding-or in any other suitable manner. These nipples are reinforced byexternal ribs 6. A

A pair of opposed valve seat members 'I and 8 are disposed within thechamber 2 in spacedl relation axially of the openings 3 with one fittedagainst the inner marginal edge of one opening and the other fittedagainst the inner marginal edge of the other opening. The order is notimportant. Each of such seat members has an opening 9 registering withand vcorresponding `in size tothe casing opening 3 with which associatedand is provided, in the present instance, with' an annular marginal edgeflange l0 fitting into a marginal recess II in the inner end edge of therespective casing opening. Each seat member extends at one end, in thepresent instance, a short distance into the right end portion of thechamber '2 beyond the respective opening 3 and at its other end tonearly the end of the chamber at the other side of the opening, s0 as toform a guide for linear reciprocatory movements of a valve I2, ashereinafter described. A

spot-pin I3 is threaded into each side of the casing I and engages therespective seat members 1, 8, at its extended end portion to cooperatelwith the flange lil and recess H to properly position and to preventturning of the member in the casing. The recess in each seat member withwhich the pin I3 engages may also serve as an index set-up point duringthe machining of said members. The casing holes I, in the bottoms. ofwhich the spot-pins I3 are threaded, are closed at their outer ends bysealing plugs I5.

The valve coacting sides of the seat members 'I and 8 are plain, and inthe case of the member 1, in the present instance, is normal to the axesof the openings 3 and 3, While in the case of the other member isinclined to such axes crosswise of the direction of longitudinalmovement of the valve I2 therebetween, as best shown in Figs. 4 and 5.

The slide valve I2, which seats in the space between the two members 'Iand 8, corresponds in shape to such space, having one side in a pianenormal tothe axis ofthe member openings 9 and its other side-inclinedthereto in parallel relation to theinclined surface of the coacting seatmember. It is thus apparent that a movement of the Valve transverse tothe seat members, and from the large to the narrow end of the taperedspace therebetween, causes a tight or wedge fit of the valve againsttherespective side faces of the seat ,y

members so as to prevent. leakage of the line fluid past the seatingsurfaces. On the other hand, a movement of the valve in the oppositedirection will effect a release of its sealing engagement with the-seatmembers so that the valve may then be freely. shifted lengthwise of suchmembers to open or close the line passage through the valve means. Forthe purpose of such opening and closing action of the fluid line, thevalve I2 is made solid at its right end portion (Figs. 1 and 2*) `tocompletely close the fluid line when in register therewith, while in itsleft end portion it is provided with an opening l2a that is movableintofull open register with the seat openings 9 when the valve is movedto the limit of its movement to the right. The movement of the valve maybe stopped at any intermediate position to effect a desired partialopening of the connected fluid line.

One end of the casing I, the right inthe present instance; is providedwith an opening il to permit access to the 'interior of the casing andthis is closed by a plug member IS which hasan internal seat through anintermediate gasket i3 against the wall of said opening. VThe plugmember has a threaded stem 28 projecting outwardly from its center andreceiving a nut 2l which is tightened against an outer cap member 22 todraw the plug member to its seat. The member 22 seats against the outermarginal edge of the opening.

The casing I, outwardly from the broad edge of the valve I2, is providedwith an enlargement or side extension 2li which, intermediate its ends,

y opposite ends of the recess 25 is mounted intravel limitbushings 29and 35. The outer end of the opening 2 6V is closed by a cap 3l whilethe outer endof theT opening,v 27 has la: packing ring'SZ mountedtherein in engagement with a gland packing 33, the opposite end thrustof which is against the limit bushing 3Q. The shaft 28, whichconstitutes the operating valve stem of the unit, projects a distanceoutwardly from the opening 2'I and is engaged by operating means ashereinafter described.

A bracket yoke 35 of substantially Y-form straddles a portion of thevalve I2 lengthwise thereof at its broad edge and is attached thereto bya pin 3S which also passes through a link 31 that is connected to theyoke 35 substantially in longitudinal line with the central portion ofthe yoke leg 35a. The yoke, in the present instance, is made of twosections separated substantially v centrally of the leg thereof andsecured together by screws 38, one of which extends through and anchorsthe link 31 to the yoke.

The leg portion 35a of the yoke has an opening therein through which theshaft 28 extends, with an eccentric portion 3S of the shaft disposedtherein An eccentric bushing 4D is mounted around the eccentric part 33of the shaft within Said yoke opening and one half of such bushing hasan interior circumferentially extending channel lil, in the presentinstance 180 in length, which. receives a stop lug 42 that is anchoredin and projects radially from the shaft 28, as best shown in Fig. 54.This interengagement of the stop lug and recess, which provides a lostmotion connection between the shaft and bushing, permics the shaft toturn 180J relative to the bushing and to effect a turning of the bushingtherewith should the shaft movement be greater than this at either endof the channel.

It will be noted that the eccentric shaft part 39 and the bushing lillhave separate centers with the radius of one designated a and of theother b in Fig. 5. It is apparent that a relative turning ofV the shaft28 and bushing 5i) will eect seating and unseating transversemovementsof the valve I2, normal tight seating being effected when theparts are in the relative positions shown in Fig. 5, with the throw ofthe shaft eccentric 39,substantially at its maximum toward the valve I2and with the stop t2 in the direct line of thrust of the yoke pin 35 onthe valve and at the inner end of the bushing channel 4I, such lineconforming to the section in Fig. 1. In such position of the parts, theaxis of the bushing.

- bushing A4Q with the shaft and, due to the then relative positionsofthe shaft and bushing axes, will impart a consequent greater seatinglforce to the Vvwedge valve I2, as will be apparent by reference to Fig.5. To unseal the wedge valve I2,

the shaft. 23. is turned in clockwise direction (Fig. 5), thus throwingthe shaftV eccentric outward to move-the valve transversely from itsseat and` at the same time moving the` stop 42 outwardly in the recess@I and causing it to engage the outer. end wall of the channel 4I toreturn the bushing M'to its .normal position in the yoke arm 35a.V Forconvenience of. assembly and machining, the bushing 43 is made in twosections with the plane of separation longitudinal to-and'intersectingthe bushing aXisand with the channel4! entirely in one section.

The endofthe casing extension 24 from which the shaft 28 projectsisextended bya bearing: sleeve 4d that has its inner end flanged andse,.- cured to the casing extension end by screws 45;

A sleeve 46 is keyed to the shaft 28 at 47 within the outer end portionof the sleeve 44 in which it has a bearing and at its outer end projectsfrom the sleeve 44 and has an operating lever 48 fixed thereto. Abearing collar 49 is threaded to and projects outwardly from the outerend of the bushing 46, and in this collar and in the outer end of thesleeve 46 is journaled an internally threaded sleeve 50 for free rotarymovements. This sleeve has its outer end portion, which projects beyondthe collar 49, threaded on the outer threaded end portion 5l of theshaft 28, the shaft thread being longer than that of the sleeve 50. Thelength of the shaft thread 5| is such with respect to the threadedportion of the sleeve 50 as to adapt a turning of the sleeve to impart afull stroke movement to the valve yoke 35 between the stops 29 and 39. Ahand Wheel 52 is xedly mounted on the sleeve 50 to turn therewith. Thesleeves 4B and '49 are retained together in locked relation by a lockingwasher 53, the end of the sleeve 49 and the hub of the wheel 5l arespaced by a gasket 54, and the inner end of the threaded sleeve 50 iscentered within the outer end of the sleeve 46 by a bushing 55. A nut 56is threaded on the outer end of the sleeve 50 to lock the control wheel52 in position. The limit bushing 39 stops the right hand travel of theshaft with the seat and valve openings 9 and I2a in full register. Thestopping function of the limit bushing 29 is not so important.

The operation of the valve control is as follows: Presuming the wedgevalve l2 to be seated in line closing position, as shown in thedrawings, the operator, in order to effect a movement of the valve toopen or partially open the fluid line, first throws the sealing controllever 43 to the right to impart a half turn to the screw shaft 28 andcause the stop 42 to move from the inner end to the outer end of thechannel 4i. This movement of the shaft relative to the eccentric bushing49 imparts an outward throw to the shaft eccentric 39 and causes thewedge valve l2 to be drawn outward from seating position between theseat members 'l and 8. At the same time the coaction of the stop 42 withthe outer end wall of the channel 4I tends to turn the bushing 4G tonormal position relative to the yoke arm 35a should the bushing havepreviously been turned from such position by the coaction of the stop 42with the inner end of the channel during the previous valve seatingoperation. The valve having thus been unseated, it may be movedlengthwise of the casing by a turning of the control wheel 52 and itsthreaded sleeve 50 on the threaded portion 5I of the control shaft. Thisstroke movement of the shaft may be suicient to place the valve openingI2a into full register with the fluid line openings in the casing, suchmovement being limited by the right hand stop 30, or the stroke may bestopped at any point short of such full movement to effect a desiredpartial registering of the valve opening .with the fluid line. When thevalve has thus been moved to the desired position with respect to thefluid line, the sealing lever 48 is moved to the left or incounterclockwise direction, thus causing the shaft eccentric 39 to turnto the left to move the valve to seating position and to throw the stop42 from the outer to the inner end of the channel 4l. If a completeseating has not been accomplished during the movement of the stop fromone end to the other of the channel 4|, a slight continued `movement ofthe shaft and stop will cause the latter to act against the inner endwall of the channel 4I and turn the eccentric bushing 40 in a directionto cause a further tightening of the valve in its seat. This action isaccomplished due to the offsetting of the axes of the shaft and bushing.

Another form of the invention is shown in Figs. 6 to l0. In this form,69 designates the valve casing forming the valve chamber 6| with theaxially aligned fluid line openings 62, 62, in its opposite sides, suchopenings being formed by nipple extensions 63 to which either a fluidline pipe or a flange for attaching such a pipe 'may be welded orotherwise suitably secured.

These nipples are preferably reinforced by casing ribs E4. The casing 60has a side extension 65 forming an extension 61a of the valve chamber 6|and providing an inspection opening 66 at its outer end, which isdisposed transversely of the valve movement instead of at an endthereof, as in the previous form. This opening is closed by aninternally seating plug member 61 and gasket 63 similar to the manner ofclosing the inspection opening Il in the previous form.

The movable wedge valve member 10 and the opposing seat members 1I and'i2 therefor are the same or similar inform, mounting and operation tothe corresponding members of the preceding form, except mainly that oneof the seat mem-bers instead of having a rigid seat in the casing wallhas a ball and socket mount therein in centered relation to the axis ofthe fluid line opening 52, as shown in Figs. '7 and 8. To provide suchmount, a socket ring 13 is set into a marginal edge recess in saidopening and the seat member l2 is provided on its outer side inmarginally surrounding relation to its fluid line opening 'I2a with anannular protuberant portion 'i4 having an outer spherical end surfaceccmplemental to and seating in said ring socket. This permits the valvemember 'I2 to adjust itself to prcperly seat against the valve member,thus compensating for any error in machining of the valve and seatmembers and the mounting of the latter in the casing. This is quite animportant feature in practice, as it not only allows for machiningerrors but eliminates the necessity of extremely accurate machining, andthe consequent time and expense, to obtain the proper seating of theparts necessary for a tight valve joint. The seat members are heldagainst turning around the axes of the respective openings '!2 in anysuitable manner, as for instance by studs inserted into the casing andinterengaging with the respective member. In the present instance, themember 'H is engaged by a stud 'l5 mounted in a casing opening, whilethe member l2 is engaged by a stud '15in an inner recess of the casingwall. The valve member 10 has an opening 'HiEL movable into and out ofregister with the seat openings 12a so that when the valve member is inone limit of movement,

' the fluid line is closed, and when in its other a bearing. Theprojecting end vof the shaft is provided with :a .feed thread 8| and hasa key- Way .82 :in a side 'thereof and extending through said threadedportion.

lThe :shaft is Aprovided within the chamber Bla with an eccentricportion 83 having 4anfeccentric bushing 84 'mounted thereon for rotaryadjustment vto vary the effective throw of the eccentric. A :link 85Vhas a close rotary mountingon the vbushing 84 so that any eccentricthrow of Lthefshaft .part B3 and the bushing 84 is imparted thereto.This link is connected to the adjacent broad edge of the wedge valve 19by a pin 8B in engagement with posts 81 anchored in and rigidlyprojecting from such edge of the valve whereby any longitudinal movementof theilink will impart transverse seating or unseating :movements tothe valve. In the present instance, the posts 81 are set into recessesin the valve edge and retained therein by lock rings 88 sprung into wallgrooves in the recesses and engaging over .shoulders on the posts.

In order to obtaina tight sealing seat of the valve 19 between the twoseat ymembers 1|, 12, the shaft is first turned to impart a limit ofseating or inward throw to its eccentric 83, with the thin side of thebushing 84 substantially in line with such throw, and the bushing isthen turned on the vportion 83 and within the link S5 to take up anyplay .and to cause a close seating of the valve when the eccentric 83 isin such position. The vdesired adjustment having thus been obtained, alock'screw 89 in the link is turned into holding .engagement with thebushing 8d, preferably-.into a .registering one of a series of holes 90inthe bushing (Fig. 8). The bushing 84 may also .be adjusted in -thelink to compensate for Wear and to maintain a tight fit between thevalve seating ports by an adjustment of the bushing 84 within the link.

A sleeve 9| is fixedly attached to and projects from the casing boss 80in spaced surrounding relation to the extended end portion of the shaft18 and .has A'a lock collar 92 journaled in its outer end portion andinternally carrying a, lock key 93 :engaging in the Vshaft keyway 82 forsliding movements therein. The key 93 is prevented from inward slidingmovements relative to the collar 92;by.a,1ock ring 94 that is sprunginto a recess intheiinner end-portion of the collar. The collar `92 hasan annular flange 95 at the outer end of :the sleeve 9| in substantiallyabutting relation thereto and provided on its inner face,orgthatadjacent to the sleeve, with a depression SB/adap'ted `toreceiveand be engaged by one of a series of spring pressed balls or detents 91mountedfin the facing end portion of the sleeve 9|. :The detents 91 arein segmental series concentric tozthe shaft axis. The depression 96 hasan opening 98 extending outward therefrom through the ange in parallelrelation to the shaft axis. Each ball or detent 91, in the presentinstance, is pressed outward by a respective spring 99 acting through aplunger |88. When a registering'ball and flange socket 95 are`interengagedthe collar 92 is locked against turnigrelativetothesleeve-9| and thekey 93 in turn locks the shaft 18 vagainst turning butdoes not prevent longitudinal adjustment of the shaft.

The `outer end of the collar 92 is cupped or .recessed withinthe'flange'portion 95, and mounted in'such recess for turning movementsrelative thereto and projecting outward therefrom `is-an internally`threaded. collar or'feed nut |0| in'lmeshrwith the threads on the shaft18. This threaded collar ,-is retained in the recessed -end of the lockcollar 92 by a gasket 482 set -into said recess and engaging a shoulder-on the nut collar and by a spring ring |03 sprung into Ithe wall of therecess at the outer side of thegasket.

A control wheel |05 is keyed on the outerend portion of the nut collar|0| so that a yturning of the wheel'will effect a turning of thenut-collar on the shaft and cause longitudinal movement of the shaft inone direction or the other, depending on Vthe direction of turning -ofthe wheel.

The wheel |95 is provided in its hub portion with a pin disposed withits vaxis parallel to the shaft axis and positioned the same radialdistance from the shaft axis as the ldetent l91 .in the lock collarflange 95. The pin `|89 ,has an inward and an outward positioncontrolled fand limited by a stud |91 in the Wheel hub-operating in abayonet form of slot |08 in the pin. When the pin is at its limit ofoutward movement, v`its inner end is disposed short of the stop collarflange 95, thus permitting free turning Inovements of the Wheel relativeto the lock collar, and when the pin is moved inward through la flangeopening 98 in register with a detent 91 it is adapted to press suchdetent out of locking engagement with the flange and thusjpermit aturning of the lock collar 92 with the wheel |85 to impart partialrotation to the shaft 18. Such turning of the shaftv in one direction'actuates the eccentric connection with the valve to effect an unseatingthereof, and a turning inthe other direction actuates the connection toeffect a seating of the valve.

The pin |86 is provided, at its outer end, witha control handle |09which facilitates bothan easy turning of the pin to cause an engagementof .one or the other of Ythe laterally extending portions of its groove|88 with the stud |81, and also .a movement of the pin either inward torelease Athe locking engagement of the detent 91 -with the look collar92 or outward to permit such loc-king engagement and to retract the pinsufficiently lto disengage the lock collar flange 95. It will beunderstood `that when the valve 19 is `seated ,in any position of itslengthwise movement ,it,isin tended to be locked in such position by theengagement of the detent 91 with the vlock .collar flange 95, thussecuring the shaft 18against any turning movement.

It is apparent in the operation .of this vform of the invention that thevalve member .10 .may be quickly unseated from between the cooperatingseating members 1| and 12so as vto permit free longitudinally shiftingmovements of the valve therebetween, by first throwing .therpin |86inward to release the locking engagement of the detent 91 with the lockcollar flange 95. This having been done, the Vwheel |05 -is turned v tocause the collar 92, key 93, -nut |.0| ands'haft 18 to turn together tounseat the valve 10. The valve having been unseated, the. pin |05 ismoved to its outer position to release the detent ,9,1 'to permit itslocking with the collar ange 95 and also to cause the lpin to releasesaid flange 'to permit vthe wheel |95 and its nut |9| to Vturn on theshaft 18 and impart axialmovement thereto to shift the valve to open or`closed position, depending on the direction of turning. When thedesired longitudinal adjustmentof the valve '10 has been obtained, thepin |86 is turned .toirelease the stud |91 from the inner arm .of .itsgroove and the pin is thenpushed inwardthrough a lflange -opening y98.in register with thedetent 91 and causes a release of such detent fromlocking engagement with the lock collar flange. The operator then turnsthe control wheel IE to impart a turning action to the lock collar 92through the engagement of the pin H16 with its flange and to thuseffecta rocking of the shaft eccentric 83 to move the valve inward toagain place it in close sealing engagement with. the seat members. Theprovision of the inspection opening 66 adjacent to a side of theeccentric connection of the shaft with the valve instead of in thecasing at an end of the valve is important, as it not only facilitateseasy access to the valve and seat members for inspection or replacementpurposes, but also makes the eccentric connection easily accessible foradjustment purposes.

It is apparent that in each form of the invention a single pressurecasing for the operating parts is provided and that this facilitates asingle fixture set-up of the casing for machining purposes to insure atrue relationship between the valve seats and control shafts receivingparts; also that in each form the body casing is capable of being openedfor inspection as to operation of the interior parts and as to valveseat tightness in either open or closed position; also that in each formthe valve control is easily' and quickly operable to effect a closeseating or unseating condition of the valve and a selective movement ofthe ivalve to open or closed position, or to a desired intermediateposition when unseated. i

The sealing means for the closure plugs I8 and 61 constitutes thesubject-matter of a copending application. n

I wish it understood that my invention is not limited to any specificconstruction, arrangement or form of the parts, as it is capable ofnumerous modifications and changes without departing from the spirit ofthe claims.

Having thus described my invention, what I claim as new. and desire tosecure by United States Letters Patent, is: l

l. In a fluid pressure line valve of the class described, a valve casinghaving an elongated chamber therein with opposed fluid line opening inits sides intermediate its ends and with opposed relatively taperedwalls, a wedge valve longitudinally movable in said chamber between.said walls to open and close said openings and transversely movable tohave a wedge sealinr t in the chamber at any point in its othermovement,l -a transverse ext^nsion from said valve, a shaft'mounted forrotary and axial movements in said casing, said extension beingeccentrically mounted on the shaft whereby rotation of the shaft impartssealing or unsealing movements to the valve through the extension andaxial shifting movements of the shaft impart said other movements to thevalve through the extension, a control for rotating said shaft, and acontrol having threaded connection with the shaft and operable toaxially move the shaft relative to the casing.

2. In a fluid pressure line valve of the class described, a valve casinghaving an elongated chamber therein with opposed fluid line openings inits sides intermediate its ends, a wedge valve longitudinally movable insaid chamber to open and close said openings and transversely movabletherein to have a wedge sealing fit in the chamber at any point in itsother movement, a transverse extension from said valve, said extensionhaving an opening transverse to the sealing movements of the valve, aneccentric bushing in said opening, and a shaft mounted in said casingfor rotary and axial movements and having an eccentric part rotatablymounted in said bushing with the axes of said part and eccentric shaftportion offset, said shaft being rotatable to impart sealing orunsealing movements to the valve and having rotary lost motion stopconnection with the bushing, whereby at a predetermined point in arotation of the shaft relative to the bushing said stop connectionbecomes effective to turn the bushing with the shaft to exert anl addedsealing pressure to the valve, the axial movements of said shaftimparting predetermined opening and closing movements to the valve.

3. In a fluid pressure line valve of the class described, a valve casinghaving an elongated chamber therein with opposed fluid line openings inits sides intermediate its ends and forming a wedge space between saidopenings, a wedge Valve longitudinally movable as a unit in said spaceto open and close said openings and transversely movable therein to havea wedge sealing t in the chamber at any point in its other movement, atransverse extension from said valve, a'shaft mounted in the casing forrotary and axial movements, said extension having an eccentric mount onthe shaft to impart transverse sealing movements to the valve by rotarymovement of the shaft in any position of longitudinal movement of thevalve, the axial movements of the shaft imparting longitudinal movementto the valve through said extension, and means cooperating with saidshaft and extension and operable by a rotating movement of the shaftduring a valve sealing operation to impart an added sealing force to thevalve.

il. An arrangement as called for in claim 3, wherein said last meansincludes an eccentric bushing rotatable between said shaft and extensionand a rotary lost motion stop connection between the shaft and bushing,which latter, when a rotation of the shaft relative to the bushing hascaused a maximum valve sealing movement of the shaft eccentric, willthen act on the bushing to turn it to impart an added sealing force tothe valve.

5. In a fluid pressure line valve of the class described, a casinghaving a chamber therein with inlet and outlet fluid line openingsthereto, a wedge valve adapted by one movement to seat between saidopenings and by another movement to open and close said openings, ashaft mounted in said casing for axial and rotary movements. aconnection between said shaft and'valve for imparting one of said valvemovements to the valve when the shaft is rotated and the other of saidmovements to the valve when the shaft is axially moved, rotatable meansthreaded on the shaft and anchored against axial movements relative tothe casing, a lock collar feathered on the shaft and free to turnrelative to the casing, and means selectively operable to connect saidmeans and collar to turn together to rotate with the shaft or todisconnect said rotatable means and collar and to anchor the collaragainst turning relative to the casing.

6. An arrangement as called for in claim 5, wherein the selective meansincludes a spring pressed detent normally operable to lock said collaragainst turning relative to the casing together with means manuallyoperable to permit normal engagement of said detent and a relativeturningr of said rotatable means and collar or to 11 releaseesaid'detent from said collar and to cause the collar and rotatable means toturn together.

'7'. In afluid pressure line valve of the class described, aA casinghaving a chamber therein with inlet and outlet fluid line openingsthereto, a wedge valve adapted by one movement to seat between said'openings and by another movement toopen and close said openings, a shaftmounted in said casing for axial and rotary movements, a` connection.between said shaft and valve for imparting one of said valve movementsto the valve when the shaftis rotated and the other of movements tothevalve when the shaft is axially moved, a rotatable control memberthreaded on said shaft and anchored against axial movements relative tothe casing, a collar rotatably' mounted in the casing and feathered onsaid'shaft, said collar being held against axial movements relative tothe casing, means normally operable to lock the collarl against turningrelative to the casing, and means carried by said control means andmovable into a position to release said locking means and to connect thecollar and control for rotation, one by the other, `and also operable topermit engagement of said locking means and to break the connectionbetween the collar and control means.

8. In a fluid pressure line valve of the class described, a valve casinghaving an elongated chamberrtherein with opposed fluid line openings inits' sides intermediate its ends, a Wedge valve longitudinally movablein said chamber to open and close said openings and transversely movabletherein to have a wedge sealing fit in the chamber at any point in itsother movement, a transverse extension from said valve, said extensionhaving an opening transverse to the sealing movements of the valve, aneccentric bushing rotatably mounted in said opening, a shaft mounted insaid casing for rotary and axial movements and having an eccentric partrotatably mounted in said bushing with the axes of thev extensionopening and eccentric shaft part offset, said shaft being rotatable toimpart sealing or unsealing movements to the valve through saidextension and the axial movements of said shaft imparting predeterminedopening and closingimovements to the valve through said extension, andmeans for retaining said bushing in any position of rotary adjustment onthe shaft.

9. In a uid pressure line valve of the class described, a valve casinghaving a chamber therein with opposed relatively tapered faces and withopposed fluid line openings in its side faces intermediate their ends, aWedge valve Vmovable in said chamber in a direction length- Wise to itsWedge angle to open and closesaid open-ings and in a diierent directiontherein to have a Wedge sealing or unsealing movement in the chamber atany point in its other movement, means operable to selectively impartsaid movements to the valve, said means including a shaft, an eccentricpart on the shaft and a valve extension mounted on said part, said shaftbeing axially shiftable to impart one of said movements to the valvethrough said extension and eccentric partand being rotatable to actuatethe eccentric part of said connection to impart the other of saidmovements to the valve through the extension.

10. In a fluid pressure line valve of the class described, a valvecasing having an elongated chamber therein with opposed fluid lineopenings inits sides intermediate its ends, a Wedge valve longitudinallymovable in said chamber to open and close said openings and transverselymovable therein to have a Wedge sealing fit in the chamber at any pointin its other movement, a transverse extension from said valve, saidextension having an opening transverse to the sealing movements of thevalve, an eccentric bushing rotatably mounted in said opening, and ashaft mounted in said casing for rotary and axial movements and havingan eccentric part rotatably mounted in said bushing with the axes of theextension opening and the eccentric shaft part offset, said shaft beingrotatable to impart sealing or unsealing movements to the valve andbeing axially movable to impart predetermined opening and closingmovements to the valve, both said valve movements being engaged throughsaid bushing and extension.

PAUL Y. DUFFEE.

REFERENCES CITED The following references are of record in the le ofthis patent:

UNITED STATES PATENTS Number Name Date 621,566 Hendy Mar. 21, 1899673,925 Powell May 14, 1901 1,134,811 Berger Apr. 6, 1915 1,250,041Snyder Dec. 1l, 1917 1,722,752 Karnath July 30, 1929 1,933,182 PagonOct. 31, 1933 2,344,747 Sperry Mar. 21, 1944 FOREIGN PATENTS NumberCountry Date 346,826 Italy of 1937

